Optical and Physical Layer Statistics
Performance monitoring is conducted on a number of optical and physical layer attributes on UFMs and optical modules.
Table 1: Optical Statistics
Counter | Description | Units |
|---|---|---|
cc-opr | Coherent channel power received. | dBm |
cc-opr-avg | Coherent channel power received (average). | dBm |
cc-opr-max | Coherent channel power received (maximum). | dBm |
cc-opr-min | Coherent channel power received (minimum). | dBm |
cd | Chromatic dispersion. The chromatic dispersion of the received signal. | ps/nm |
cd-avg | Chromatic dispersion (average). | ps/nm |
cd-max | Chromatic dispersion (maximum). | ps/nm |
cd-min | Chromatic dispersion (minimum). | ps/nm |
cfo | Carrier frequency offset. The carrier frequency offset of the received signal. | MHz |
cfo-avg | Carrier frequency offset (average). | MHz |
cfo-max | Carrier frequency offset (maximum). | MHz |
cfo-min | Carrier frequency offset (minimum). | MHz |
dgd | Differential group delay. The differential group delay of the received signal. | ps |
dgd-avg | Differential group delay (average). | ps |
dgd-max | Differential group delay (maximum). | ps |
dgd-min | Differential group delay (minimum). | ps |
lbc | Laser bias current. | mA |
lbc-avg | Laser bias current (average). | mA |
lbc-max | Laser bias current (maximum). | mA |
lbc-min | Laser bias current (minimum). | mA |
ltemp | Laser temperature. | °C |
ltemp-avg | Laser temperature (average). | °C |
ltemp-max | Laser temperature (maximum). | °C |
ltemp-min | Laser temperature (minimum). | °C |
opt-back-ref-ratio | Optical back-reflection ratio The ratio of optical back reflection. | dB |
opt-back-ref-ratio-min | Optical back-reflection ratio (minimum) | dB |
opt-back-ref-ratio-max | Optical back-reflection ratio (maximum) | dB |
opt-back-ref-ratio-avg | Optical back-reflection ratio (average) | dB |
opt-back-ref-ratio-std-avg | Optical back-reflection ratio (standard deviation from average) | dB |
opl-rx | Optical power loss receive. The optical power loss in the receive direction. | dB |
opl-rx-avg | Optical power loss receive (average). | dB |
opl-rx-max | Optical power loss receive (maximum). | dB |
opl-rx-min | Optical power loss receive (minimum). | dB |
opr | Optical power received. | dBm |
opr-avg | Optical power received (average). | dBm |
opr-max | Optical power received (maximum). | dBm |
opr-min | Optical power received (minimum). | dBm |
opr-std-avg | Optical power received (standard deviation). An approximation of the variance of the power samples of the received optical signal. | dBm |
opt | Optical power transmitted. | dBm |
opt-avg | Optical power transmitted (average). | dBm |
opt-max | Optical power transmitted (maximum). | dBm |
opt-min | Optical power transmitted (minimum). | dBm |
opt-std-avg | Optical power transmitted (standard deviation). An approximation of the variance of the power samples of the transmitted optical signal. | dBm |
opt-total | Total (signal and noise) optical power transmitted. | dBm |
opt-total-avg | Total (signal and noise) optical power transmitted (average). | dBm |
opt-total-max | Total (signal and noise) optical power transmitted (maximum). | dBm |
opt-total-min | Total (signal and noise) optical power transmitted (minimum). | dBm |
osnr | Optical signal to noise ratio. The signal to noise ratio of the received optical signal. | dB |
osnr-avg | Optical signal to noise ratio (average). | dB |
osnr-max | Optical signal to noise ratio (maximum). | dB |
osnr-min | Optical signal to noise ratio (minimum). | dB |
snr | Signal to noise ratio. The signal to noise ratio of the received signal. | dB |
snr-avg | Signal to noise ratio (average). | dB |
snr-max | Signal to noise ratio (maximum). | dB |
snr-min | Signal to noise ratio (minimum). | dB |
snr-x | X-polarization signal to noise ratio. The X-polarization signal to noise ratio of the received optical signal. | dB |
snr-x-avg | X-polarization signal to noise ratio (average). | dB |
snr-x-max | X-polarization signal to noise ratio (maximum). | dB |
snr-x-min | X-polarization signal to noise ratio (minimum). | dB |
snr-y | Y-polarization signal to noise ratio. The Y-polarization signal to noise ratio of the received optical signal. | dB |
snr-y-avg | Y-polarization signal to noise ratio (average). | dB |
snr-y-max | Y-polarization signal to noise ratio (maximum). | dB |
snr-y-min | Y-polarization signal to noise ratio (minimum). | dB |
span-lngth | The span length. | km |